1972215598 has 16 divisors (see below), whose sum is σ = 3118731264. Its totient is φ = 933992280.

The previous prime is 1972215563. The next prime is 1972215601. The reversal of 1972215598 is 8955122791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335490 + ... + 341317.

It is an arithmetic number, because the mean of its divisors is an integer number (194920704).

Almost surely, 2^1972215598 is an apocalyptic number.

1972215598 is a deficient number, since it is larger than the sum of its proper divisors (1146515666).

1972215598 is a wasteful number, since it uses less digits than its factorization.

1972215598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676887.

The product of its digits is 453600, while the sum is 49.

The square root of 1972215598 is about 44409.6340673958. The cubic root of 1972215598 is about 1254.0594632419.

The spelling of 1972215598 in words is "one billion, nine hundred seventy-two million, two hundred fifteen thousand, five hundred ninety-eight".